C172 instructor reported deviating to miss a possible drone resulting in tfr encroachment.

Attributes
ACN	1680159
Time
Date	201908
Local Time Of Day	1201-1800
Place
Locale Reference	OAK.Airport
State Reference	CA
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Visual Approach
Flight Plan	VFR
Aircraft 2
Make Model Name	UAV - Unpiloted Aerial Vehicle
Flight Phase	Other unknown
Person 1
Function	Pilot Not Flying
Qualification	Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 5000 Flight Crew Type 20
Events
Anomaly	Airspace Violation All Types Conflict Airborne Conflict Deviation - Procedural FAR Deviation - Procedural Published Material / Policy

Narrative:

Had to deviate from course to the left to avoid what looked like a drone and may have briefly encroached a tfr area (cal berkley football stadium) to avoid contact with this object.

Original NASA ASRS Text

Title: C172 Instructor reported deviating to miss a possible drone resulting in TFR encroachment.

Narrative: Had to deviate from course to the left to avoid what looked like a drone and may have briefly encroached a TFR area (Cal Berkley Football Stadium) to avoid contact with this object.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.